Jacking mechanism for self-raising ocean platforms

Details Jacking mechanism for self-raising ocean platforms Jacking mechanism for self-raising ocean platforms

1982-01-15

1984-06-26

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Multiple lifters

254 95, 74422, B66F 712

Patent

active

044562241

ABSTRACT:
The present invention pertains to self-raising ocean platforms which possess multiple legs and multiple jacking mechanisms of the double rack and pinion type with opposite sets of teeth. In accordance with the invention, each double rack 4 contains sets of obliquely cut teeth, with at least one rigid component constituting a lateral thrust-block 7 being situated between the platform structure 2 and each platform leg 1, in such a manner that this arrangement provides force, c, which tends to press one portion of the platform leg 1 against the thrust-block 7, thereby ensuring constant positioning of the pinion teeth 5 in relation to the set of teeth located upon the rack 4.

REFERENCES:
patent: 1850070 (1932-03-01), Booth
patent: 2170595 (1939-08-01), Povandra
patent: 2781668 (1957-02-01), Berta
patent: 3302750 (1967-02-01), Arnold
patent: 3399578 (1968-09-01), Lindabury
patent: 3420337 (1969-01-01), Magee
patent: 4203576 (1980-05-01), Button
Lapis Industrial Opportunities, "Platform Jacking Mechanisms", No. 37, Oct. 1961, pp. 21-24.

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